Fox News contributor and former Acting ICE Director Tom Homan joined Harris Faulkner on "Outnumbered Overtime" Thursday to react to President Trump's warning that he could use the U.S. military to close the southern border with Mexico if officials there don’t stop a growing migrant caravan that's swelled in size to about 4,000 people.

The president’s latest threat against the caravan that originated in Honduras – and which is heading to the U.S. in a bid to escape Honduras’ poverty and violence – comes as Secretary of State Mike Pompeo is heading to Central America to talk with leaders about the issue.

I am watching the Democrat Party led (because they want Open Borders and existing weak laws) assault on our country by Guatemala, Honduras and El Salvador, whose leaders are doing little to stop this large flow of people, INCLUDING MANY CRIMINALS, from entering Mexico to U.S.....

....In addition to stopping all payments to these countries, which seem to have almost no control over their population, I must, in the strongest of terms, ask Mexico to stop this onslaught - and if unable to do so I will call up the U.S. Military and CLOSE OUR SOUTHERN BORDER!..

....The assault on our country at our Southern Border, including the Criminal elements and DRUGS pouring in, is far more important to me, as President, than Trade or the USMCA. Hopefully Mexico will stop this onslaught at their Northern Border. All Democrats fault for weak laws!

Noting that Mexican officials have deployed 500 additional federal police officers to the Mexico-Guatemala border, he predicted they will either turn the caravan back or let the migrants apply for asylum in Mexico.

"If these people are really concerned about persecution, fear and death and they want to claim political asylum, they are now out of Honduras. They have crossed through Guatemala and they'll get to Mexico," Homan said. "It's really not about persecution or fear. It's about getting to the United States and committing fraud."

As for Trump's threat to shut down the border, Homan said it's "certainly an option," noting that President Reagan shut down a large portion of the border in the 1980s after a DEA agent went missing in Mexico and the Mexican government was uncooperative.

Just a few weeks away from November's midterm elections, Homan said he hopes immigration enforcement and border security are issues voters take to the polls.

"This is right at the doorstep of Congress. And the Democrats -- I've gotta agree with the president -- they want open borders. They want to abolish ICE, which equals open borders," Homan said. "I hope the American people are paying attention."